7307 - Tube or pipe fittings (for example, couplings, elbows, sleeves), of iron or steel:

Sub-classifications

Commodity Code

Description

Cast fittings:
- 7307 1100
  
  Of nonmalleable cast iron
  - 7307 1100 30
    
    For threaded pipe
  - Other:
    
    7307 1100 45
    
    For cast-iron soil pipe
    
    7307 1100 60
    
    Other
- 7307 19
  
  Other:
  - 7307 1930
    
    Ductile fittings
    
    7307 1930 40
    
    Grooved-end fittings (including grooved couplings)
    
    Other:
    
    7307 1930 60
    
    Threaded
    
    7307 1930 70
    
    With mechanical, push-on (rubber compression) or flanged joints attached
    
    7307 1930 85
    
    Other
  - 7307 1990
    
    Other
    
    7307 1990 30
    
    Unions
    
    Other:
    
    7307 1990 40
    
    Grooved-end fittings (including grooved couplings)
    
    Other:
    
    7307 1990 60
    
    Threaded
    
    7307 1990 80
    
    Other
Other, of stainless steel:
- 7307 21
  
  Flanges:
  - 7307 2110 00
    
    Not machined, not tooled and not otherwise processed after forging
  - 7307 2150 00
    
    Other
- 7307 22
  
  Threaded elbows, bends and sleeves:
  - 7307 2210 00
    
    Sleeves (couplings)
  - 7307 2250 00
    
    Other
- 7307 2300
  
  Butt welding fittings
  - 7307 2300 30
    
    Not machined, not tooled and not otherwise processed after forming
  - 7307 2300 90
    
    Other
- 7307 2900
  
  Other
  - 7307 2900 30
    
    Nipples
  - 7307 2900 90
    
    Other
Other:
- 7307 91
  
  Flanges:
  - Not machined, not tooled and not otherwise processed after forging:
    
    7307 9110 00
    
    Of iron or nonalloy steel
    
    7307 9130 00
    
    Of alloy steel (except stainless steel)
  - 7307 9150
    
    Other
    
    With an inside diameter of less than 360 mm:
    
    7307 9150 10
    
    Of iron or nonalloy steel
    
    7307 9150 30
    
    Of alloy steel (except stainless steel)
    
    With an inside diameter of 360 mm or more:
    
    7307 9150 50
    
    Of iron or nonalloy steel
    
    7307 9150 70
    
    Of alloy steel (except stainless steel)
- 7307 92
  
  Threaded elbows, bends and sleeves:
  - 7307 9230
    
    Sleeves (couplings)
    
    7307 9230 10
    
    Of iron or nonalloy steel
    
    7307 9230 30
    
    Of alloy steel (except stainless steel)
  - 7307 9290 00
    
    Other
- 7307 93
  
  Butt welding fittings:
  - With an inside diameter of less than 360 mm:
    
    7307 9330
    
    Of iron or nonalloy steel
    
    7307 9330 10
    
    Not machined, not tooled and not otherwise processed after forging
    
    7307 9330 40
    
    Other
    
    7307 9360 00
    
    Of alloy steel (except stainless steel)
  - 7307 9390
    
    With an inside diameter of 360 mm or more
    
    Of iron or nonalloy steel:
    
    7307 9390 10
    
    Not machined, not tooled and not otherwise processed after forging
    
    7307 9390 40
    
    Other
    
    7307 9390 60
    
    Of alloy steel (except stainless steel)
- 7307 99
  
  Other:
  - Not machined, not tooled and not otherwise processed after forging:
    
    7307 9910 00
    
    Of iron or nonalloy steel
    
    7307 9930 00
    
    Of alloy steel (except stainless steel)
  - 7307 9950
    
    Other
    
    Of iron or nonalloy steel:
    
    7307 9950 15
    
    Nipples
    
    7307 9950 45
    
    Other
    
    7307 9950 60
    
    Of alloy steel (except stainless steel)

Overview

This HTS category, 7307, encompasses a broad range of fittings designed for use with tubes and pipes made from iron or steel. These fittings serve the essential function of connecting, terminating, or altering the direction of piping systems. Examples include couplings used to join two pipes, elbows for changing the direction of flow, tees for branching lines, and sleeves for reinforcement or sealing. The classification is based on the material being iron or steel and the fitting's purpose in a pipe or tube system.

When classifying within Section XV, it is crucial to distinguish this category from other base metal articles and iron or steel products. Unlike raw materials (e.g., bars, rods, angles of iron or steel in Chapter 72), these are finished components specifically engineered for piping applications. Furthermore, fittings made from other base metals, such as copper or aluminum, would fall under different HTS chapters.

The subcategories within 7307 allow for further specificity based on manufacturing method and material composition. "Cast fittings" are distinguished by their production process, typically involving molten metal poured into a mold. "Other, of stainless steel" isolates fittings made from stainless steel, a specific alloy known for its corrosion resistance. The residual "Other" category captures all remaining iron and steel pipe fittings not otherwise specified, ensuring comprehensive coverage for this vital component of industrial and infrastructure systems.

Go up to Chapter 73: Articles of iron or steel

7307 - Tube or pipe fittings (for example, couplings, elbows, sleeves), of iron or steel:

Sub-classifications

Overview

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